Yeah, they are quite flaky for sure. Baldies is pretty cool, especially the FMV sequences. They're actually quite funny. :O)
The JagGD cartridge uses an SD card not only to read ROMs, but can do CD emulation to a point. But, you need to convert the game to CDI and then JCD to run it on the cartridge. There is a application tool for that, but the CD emulation isn't perfect yet. However, SainT at RetroHQ is working on that. Not all JCD-formatted CD games work on the cartridge yet, but I think Baldies and Dragon's Lair both work on the JagGD cartridge. This is the closest thing to an ODE the Jaguar has, so far anyway. Not only that, it's scarce and expensive to buy: about USD $200.00. The price includes shipping and handling.
You're right about one thing, though. The CD unit does look weird. It look like a toilet seat, hence the famous nickname for it. Thanks for letting me share. :O)